BEFORE AFTER
m
M M
MASS, M, MOVES HORIZONTALLY
AT V = (+20 m/s † +03) WHEN AN
INTERNAL EXPLOSION CAUSES IT TO
BREAK APART INTO 2 UNEQUAL PIECES.
mi 7.0 KG AND Ys=(16+123). m/s.
mq 25.0KG
DURING THIS EVENT
NO MASS IS LOST.
BANG
ma
*725
7) USING THE PROPER PHYSICS LAW, FIND THE FINAL VELOCITY FOR ME
125 E QUALS:
(A) (25.6. - 16.83) m/s (B) (25.67 - 12.0 m/s
(c) (16.81
- 12.03.) m/s
(D) (16.8 - 25.63.). Ms
8) THE AMOUNT
OF
ENERGY PRODUCED BY THE EXPLOSION IS CLOSEST TO :
(A) +375 J
(B) + 650 J
(C) + 850 J
CD) +1075J
(E) + 1350 J
(F) NONE
OF THESE ANSWERS ARE WITHIN
200 J
OF THE CORRECT ANSWER

In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons